[MIPS] Add topology_init.

    
A recent patch introduced cpu topology in sysfs.  When you run a kernel
with SMP and sysfs enabled, you now get an Oops on boot. The following
patch fixes that by adding topology_init to arch/mips/kernel/smp.c. The
code is copied from arch/s390/kernel/smp.c.
    
Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 20 insertions, 0 deletions

diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index 25472fcaf715..5e189862e523 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -29,6 +29,7 @@
 #include <linux/timex.h>
 #include <linux/sched.h>
 #include <linux/cpumask.h>
+#include <linux/cpu.h>
 
 #include <asm/atomic.h>
 #include <asm/cpu.h>
@@ -424,6 +425,25 @@ void flush_tlb_one(unsigned long vaddr)
         local_flush_tlb_one(vaddr);
 }
 
+static DEFINE_PER_CPU(struct cpu, cpu_devices);
+
+static int __init topology_init(void)
+{
+        int cpu;
+        int ret;
+
+        for_each_cpu(cpu) {
+                ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu, NULL);
+                if (ret)
+                        printk(KERN_WARNING "topology_init: register_cpu %d "
+                               "failed (%d)\n", cpu, ret);
+        }
+
+        return 0;
+}
+
+subsys_initcall(topology_init);
+
 EXPORT_SYMBOL(flush_tlb_page);
 EXPORT_SYMBOL(flush_tlb_one);
 EXPORT_SYMBOL(cpu_data);